Sentences with phrase «graphene oxide flakes»

They then placed the graphene oxide flakes in solution and stimulated the flakes to curl into scrolls, using two similar approaches: a low - frequency tip - sonicator, and a high - frequency custom reactor.

Stein and Amadei applied both techniques to solutions of graphene oxide flakes and observed similar effects: The bubbles that were created in solution eventually collapsed, releasing energy that caused the flakes to spontaneously curl into scrolls.

Higher frequencies and shorter treatments did not lead to significant damage of the graphene oxide flakes and produced larger scrolls, while low frequencies and longer treatment times tended to cleave flakes apart and create smaller scrolls.

Not exact matches

But recently, scientists have discovered that radioactive materials in water can clump onto flakes of graphene oxide (GO).

Using metal ions with three or more positive charges, researchers in Tian's laboratory bonded graphene - oxide flakes into a transparent membrane.

An electron microscope image shows flake - like nanoplatelets made of graphene quantum dots drawn from coal and graphene oxide sheets, modified with boron and nitrogen.

Stein and Amadei first used a common technique called the Hummers» method to separate graphite flakes into individual layers of graphene oxide.